I finally did it
I wouldn't class myself as being the best racer... far from it but this has to be one the toughest trophies I've done. I literally scraped through with a time of 1:17:99
This was after trying for what have must have been like for hours and hours, I didn't think I was ever going to get it.
I was hitting all the split times in the video but always ended up messing up the final turn into the home straight.
Glad thats over though.